/*
 * @(#)MulticastServer.java	1.0 Mar 8, 2008
 *
 *	The MIT License
 *
 *	Copyright (c) 2008 Malachi de AElfweald <malachid@gmail.com>
 *
 *	Permission is hereby granted, free of charge, to any person obtaining a copy
 *	of this software and associated documentation files (the "Software"), to deal
 *	in the Software without restriction, including without limitation the rights
 *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *	copies of the Software, and to permit persons to whom the Software is
 *	furnished to do so, subject to the following conditions:
 *
 *	The above copyright notice and this permission notice shall be included in
 *	all copies or substantial portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *	THE SOFTWARE.
 */
package org.eoti.net.mcast;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;
import java.net.UnknownHostException;

public class MulticastServer<DATA>
{
	protected Multicast mcast;

	public MulticastServer()
	throws UnknownHostException
	{
		mcast = new Multicast();
	}

	public MulticastServer(Multicast mcast)
	throws UnknownHostException
	{
		this.mcast = mcast;
	}

	public void notify(String eventType, DATA data)
	throws SocketException, IOException
	{
		notify(new MulticastEvent<DATA>(eventType, data));
	}

	public void notify(MulticastEvent<DATA> event)
	throws SocketException, IOException
	{
		/**
	     * Should I change this to NIO?
	     */
		DatagramSocket socket = new DatagramSocket();
		ByteArrayOutputStream baos = new ByteArrayOutputStream(mcast.getMaxPacketSize());
		ObjectOutputStream out = new ObjectOutputStream(baos);
		out.writeObject(event);
		out.flush();
		byte[] buf = baos.toByteArray();
		out.close();
		baos.close();
		DatagramPacket packet = new DatagramPacket(
			buf,
			buf.length,
			mcast.getGroupAddress(),
			mcast.getPort()
		);
		socket.send(packet);
		socket.close();
	}
}
